hh
abbr.
head-hardened 头部热处理的;
hired hand 雇员;
rail hear-hardened rail 头部热处理轨（代号）;
half-hard 半硬的;
例句:
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Would there be some "pre-HH" designation?
来自SA
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HH - 3 S is a heterocyclic compound, transparent acidic fluid.
HH-3S是一种杂环化合物 、 透明酸性液体.
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Type : Whole synthetic resin ( QS ), Composite ( HH ), and Antiskid without pellet ( WT ).
全塑 ( QS ) 型 、 混合 ( HH ) 型 、 无颗粒防滑 ( WT ) 型等各种类型.
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Then using them to research the HH neuron model's transient section and calculate the instantaneous frequency.
在HH神经元 模型中分析时间序列的暂态过程部分,求出了暂态过程的频率成分.
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How is HH succeeding where the classroom isn't?
来自THETIMES
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HH's proposed start-year isn't a leapyear.
来自SA